<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <h1>
        这是当前页面的内容
    </h1>
    <a href="https://www.douyu.com/" target="myframe">斗鱼</a>
    <a href="http://panda.tv/" target="myframe">熊猫tv</a>
    <a href="https://www.huya.com/" target="myframe">虎牙</a>
    <iframe id="myframe" name="myframe" src="" width="1000" height="500"></iframe>
</body>
</html>